EP0659989B1 - Device for supplying liquids to a piston - Google Patents

Device for supplying liquids to a piston Download PDF

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Publication number
EP0659989B1
EP0659989B1 EP94118070A EP94118070A EP0659989B1 EP 0659989 B1 EP0659989 B1 EP 0659989B1 EP 94118070 A EP94118070 A EP 94118070A EP 94118070 A EP94118070 A EP 94118070A EP 0659989 B1 EP0659989 B1 EP 0659989B1
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EP
European Patent Office
Prior art keywords
tube
internal combustion
combustion engine
injection aperture
lubrication
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Revoked
Application number
EP94118070A
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German (de)
French (fr)
Other versions
EP0659989A1 (en
Inventor
Harry Dipl.-Ing. Wolf
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Mercedes Benz Group AG
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Daimler Benz AG
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Filing date
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Application filed by Daimler Benz AG filed Critical Daimler Benz AG
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/08—Cooling of piston exterior only, e.g. by jets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/101—Lubrication of valve gear or auxiliaries of cam surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/108—Lubrication of valve gear or auxiliaries of auxiliaries
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/14—Direct injection into combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
    • F02B75/18—Multi-cylinder engines
    • F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the invention relates to a reciprocating internal combustion engine with a cylinder head housing with V-shaped rows of cylinders according to the preamble of claim 1.
  • a generic reciprocating internal combustion engine is known from DE 35 08 405 Al.
  • the reciprocating piston internal combustion engine also has a device for piston cooling, which has a tube for each piston, one end of which is connected to a lubricating oil duct and the other end of which has a spray opening.
  • the tube forms a further spray opening which, together with the other spray opening, faces the underside of the piston. This device thus only allows the pistons to be cooled.
  • the invention has for its object to provide a reciprocating piston internal combustion engine in which the device for piston cooling can also be used at the same time for the lubrication of movable engine parts.
  • the device will not only cool the pistons, but at the same time wet and lubricate the engine parts provided for gas exchange control and / or fuel delivery.
  • a multi-cylinder internal combustion engine 1 with a cylinder housing 2 with V-shaped rows of cylinders 3, 4 in the region of the tip of the V-space facing the crank chamber in the cylinder housing 2, a camshaft mount 5 for the storage of a camshaft 6, which acts as a common drive shaft with cams for actuating all gas exchange valves 7 and cams for actuating all injection pump elements 8 both Cylinder rows 3, 4 is determined.
  • the camshaft 6 has only cams for actuating the gas exchange valves 7 or only cams for actuating the injection pump elements 8.
  • Receiving bores 17, 18 assigned to the cylinders 9, 10 for the injection pumps 8 are integrally formed on the inner longitudinal sides of both rows of cylinders 3, 4.
  • Each of the so-called plug-in pumps 8 of the injection device is driven by the camshaft via a roller tappet 19 or 20 guided in the receiving bore 17 or 18 against the force of a compression spring 15, not shown.
  • An injection line 52 leads from the plug-in pump 8 to the corresponding injection nozzle 51.
  • Tappet rods 25 run between the cylinders and receiving bores in valve tappet guides 26 and 34, respectively.
  • the gas exchange valves 7 are driven by the camshaft 6 via these tappet rods 25.
  • the device for supplying lubricating oil to each individual piston 11 or 12 of the internal combustion engine 1 consists of a tube 40 or 41 (for reasons of clarity, FIG. 1 shows only the tube 40 for cooling a piston in a cylinder of the left row of cylinders).
  • the pipe 40 is fastened to the cylinder housing 2 at one of its ends and is in flow connection with a lubricating oil channel 42 formed in the cylinder housing 2. From the end fastened to the cylinder housing 2, the pipe 40 preferably runs through one or more bends into the cylinder opening of a cylinder liner on the crankcase side so that the free end of the tube 40 faces the underside of the piston 11. At this free end of the tube 40 there is a spray opening 43 for cooling the underside of the piston 11. The lubricating oil flows through the device and is sprayed against the underside of the piston 11 in a free jet after it has emerged from the spray opening 43.
  • At least one further spray opening 44 is provided in the course of the pipe 40 or 41.
  • lubricating oil is brought through this spray opening 44 to the roller tappets 19 or to the contact surfaces of the camshaft 5 and roller tappets 19 of the injection device.
  • the roller tappets 19 of the injection device are wetted and lubricated as a result.
  • the further spray opening 44 can be designed so wide that it not only wets the roller tappet but also simultaneously the tappet 25 of the gas exchange control or the contact surfaces between the tappet 25 and the camshaft 5.
  • the spray opening can be designed in the form of a gap.
  • Two or more spray openings 44 can also be provided in the course of the tube, the one spray opening serving for the lubrication of the engine parts provided for the gas exchange control and the second spray opening serving for the lubrication of the engine parts provided for the fuel delivery.
  • the at least one further spray opening 44 can be produced separately on the manufactured pipe 40 by drilling or at the same time during the production of the pipe.
  • the further spray opening 44 preferably runs transversely to the longitudinal axis of the tube 40.
  • a nozzle can be attached or attached both to the spray opening 43 provided for cooling the underside of the piston and to the at least one further spray opening 44 provided in the course of the tube.
  • the tube and the nozzle or nozzles can also be manufactured uniformly from one piece of tube.
  • the individual pipes 40 with their spray openings 43 and 44 must always be aligned exactly with the components to be molded.
  • the alignment must be done in a simple manner and with simple means. 2 and 3, this is achieved by a fixing plate 53 fastened to the tube 40.
  • the tube 40 passes through the sheet 53 so far that its cylinder housing end 55 protrudes with a detent length 55.
  • the tube 40 dips with the locking length 55 in a branch bore 56 branched off from the lubricating oil channel 42 as a first position securing.
  • the final fixation on the cylinder housing 2 is then carried out by means of a screw 57, which is inserted through a bore 58 in the fixing plate 53 and screwed into a threaded bore 59 of the cylinder housing 2. So that the alignment of the spray openings 43 and 44 takes place automatically during assembly, the bores 56 and 59 in the cylinder housing 2 and the pipe 40 are arranged relative to the fixing plate 53 in a predetermined position relative to one another.

Description

Die Erfindung betrifft eine Hubkolbenbrennkraftmaschine mit einem Zylinderkopfgehäuse mit V-förmig angeordneten Zylinderreihen gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a reciprocating internal combustion engine with a cylinder head housing with V-shaped rows of cylinders according to the preamble of claim 1.

Eine gattungsgemäße Hubkolbenbrennkraftmaschine ist aus der DE 35 08 405 Al bekannt. Die Hubkolbenbrennkraftmaschine besitzt ebenfalls eine Einrichtung zur Kolbenkühlung, die für jeden Kolben ein Rohr aufweist, dessen eines Ende an einen Schmierölkanal angeschlossen ist und dessen anderes Ende eine Spritzöffnung aufweist. In seinem Verlauf bildet das Rohr eine weitere Spritzöffnung aus, die zusammen mit der anderen Spritzöffnung der Unterseite des Kolbens gegenübersteht. Diese Einrichtung ermöglicht somit nur eine Kühlung der Kolben.A generic reciprocating internal combustion engine is known from DE 35 08 405 Al. The reciprocating piston internal combustion engine also has a device for piston cooling, which has a tube for each piston, one end of which is connected to a lubricating oil duct and the other end of which has a spray opening. In its course, the tube forms a further spray opening which, together with the other spray opening, faces the underside of the piston. This device thus only allows the pistons to be cooled.

Zum allgemeinen technischen Hintergrund wird noch auf die DE-A-31 25 835, DE-A-39 10 794 und DE-A-25 24 272 verwiesen.For general technical background, reference is also made to DE-A-31 25 835, DE-A-39 10 794 and DE-A-25 24 272.

Der Erfindung liegt die Aufgabe zugrunde, eine Hubkolbenbrennkraftmaschine zu schaffen, bei der die Einrichtung zur Kolbenkühlung auch gleichzeitig zur Schmierung von beweglichen Triebwerksteilen verwendet werden kann.The invention has for its object to provide a reciprocating piston internal combustion engine in which the device for piston cooling can also be used at the same time for the lubrication of movable engine parts.

Die Aufgabe ist erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 gelöst.
Durch die mindestens eine weitere Spritzöffnung wird die Vorrichtung nicht nur die Kolben kühlen, sondern gleichzeitig die für die Gaswechselsteuerung und/oder Kraftstofförderung vorgesehenen Triebwerksteile benetzen und schmieren.The object is achieved by the characterizing features of claim 1.
Through the at least one additional spray opening, the device will not only cool the pistons, but at the same time wet and lubricate the engine parts provided for gas exchange control and / or fuel delivery.

Die mit der Erfindung erzielten Vorteile liegen deswegen insbesondere darin, daß durch ein einziges Rohr sowohl eine gezielte Kühlung des Kolbens als auch eine gezielte Schmierung spezieller Triebwerksteile erreicht wird. Ferner kann auf eine separate Schmierung dieser Triebwerksteile verzichten werden, was eine Vereinfachung der gesamten Maschine bzw. Brennkraftmaschine zur Folge hat. Darüber hinaus können die zur Lösung der Aufgabe notwendigen Maßnahmen besonders einfach und wirtschaftlich durchgeführt werden, in dem an einem üblichen Rohr für die Kühlung der Unterseite des Kolbens lediglich Spritzöffnungen vorgesehen werden, die ggf. durch Bohren erzeugt werden können.The advantages achieved with the invention are therefore in particular that both a targeted cooling of the piston and a targeted lubrication of special engine parts is achieved by a single tube. Furthermore, separate lubrication of these engine parts can be dispensed with, which results in a simplification of the entire machine or internal combustion engine. In addition, the measures necessary to solve the task can be carried out particularly simply and economically, in that only spray openings are provided on a conventional tube for cooling the underside of the piston, which can optionally be produced by drilling.

Besonders vorteilhafte Ausgestaltungen der Erfindung sind den weiteren Ansprüchen zu entnehmen.Particularly advantageous embodiments of the invention can be found in the further claims.

In der nachfolgenden Zeichnungsbeschreibung ist ein Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung anhand der Zeichnung näher erläutert.In the following description of the drawing, an embodiment of a device according to the invention is explained in more detail with reference to the drawing.

Es zeigt:

  • Fig. 1 die erfindungsgemäße Vorrichtung an einer schematisch im Querschnitt dargestellten Brennkraftmaschine;
  • Fig. 2 eine Fixierung für ein Spritzrohr der erfindungsgemäßen Vorrichtung am Zylindergehäuse in einem vergrößerten Querschnitt;
  • Fig. 3 die Fixierung aus Fig. 2 in einer Draufsicht.
It shows:
  • Figure 1 shows the device according to the invention on an internal combustion engine shown schematically in cross section.
  • 2 shows a fixation for a spray tube of the device according to the invention on the cylinder housing in an enlarged cross section;
  • Fig. 3 shows the fixation of Fig. 2 in a plan view.

Gemäß Fig. 1 besitzt eine mehrzylindrige Brennkraftmaschine 1 mit einem Zylindergehäuse 2 mit V-förmig angeordneten Zylinderreihen 3, 4 im Bereich der zum Kurbelraum weisenden Spitze des V-Raumes im Zylindergehäuse 2 eine Nockenwellenaufnahme 5 für die Lagerung einer Nockenwelle 6, welche als gemeinsame Antriebswelle mit Nocken zur Betätigung aller Gaswechselventile 7 und Nocken zur Betätigung aller Einspritzpumpenelemente 8 beider Zylinderreihen 3, 4 bestimmt ist. Im Rahmen der Erfindung ist es denkbar, daß die Nockenwelle 6 nur Nocken zur Betätigung der Gaswechselventile 7 oder nur Nocken zur Betätigung der Einspritzpumpenelemente 8 besitzt.1 has a multi-cylinder internal combustion engine 1 with a cylinder housing 2 with V-shaped rows of cylinders 3, 4 in the region of the tip of the V-space facing the crank chamber in the cylinder housing 2, a camshaft mount 5 for the storage of a camshaft 6, which acts as a common drive shaft with cams for actuating all gas exchange valves 7 and cams for actuating all injection pump elements 8 both Cylinder rows 3, 4 is determined. In the context of the invention, it is conceivable that the camshaft 6 has only cams for actuating the gas exchange valves 7 or only cams for actuating the injection pump elements 8.

An den innenliegenden Längsseiten beider Zylinderreihen 3, 4 sind den Zylindern 9, 10 zugeordnete Aufnahmebohrungen 17, 18 für die Einspritzpumpen 8 angeformt. Jede der sogenannten Steckpumpen 8 der Einspritzvorrichtung ist von der Nockenwelle über einen in der Aufnahmebohrung 17 bzw. 18 geführten Rollenstößel 19 bzw. 20 gegen die Kraft einer nicht dargestellten Druckfeder 15 angetrieben. Von der Steckpumpe 8 führt eine Einspritzleitung 52 zu der entsprechenden Einspritzdüse 51.Receiving bores 17, 18 assigned to the cylinders 9, 10 for the injection pumps 8 are integrally formed on the inner longitudinal sides of both rows of cylinders 3, 4. Each of the so-called plug-in pumps 8 of the injection device is driven by the camshaft via a roller tappet 19 or 20 guided in the receiving bore 17 or 18 against the force of a compression spring 15, not shown. An injection line 52 leads from the plug-in pump 8 to the corresponding injection nozzle 51.

Zwischen den Zylindern und Aufnahmebohrungen verlaufen Stößelstangen 25 in Ventilstößelführungen 26 bzw. 34. Die Gaswechselventile 7 werden durch die Nockenwelle 6 über diese Stößelstangen 25 angetrieben.Tappet rods 25 run between the cylinders and receiving bores in valve tappet guides 26 and 34, respectively. The gas exchange valves 7 are driven by the camshaft 6 via these tappet rods 25.

Die Vorrichtung zur Zufuhr von Schmieröl zu jedem einzelnen Kolben 11 bzw. 12 der Brennkraftmaschine 1 besteht aus einem Rohr 40 bzw. 41 (aus Klarheitsgründen stellt Fig. 1 nur das Rohr 40 zur Kühlung eines Kolbens in einem Zylinder der linken Zylinderreihe dar). Das Rohr 40 ist an einem seiner Enden am Zylindergehäuse 2 befestigt und steht in Strömungsverbindung mit einem im Zylindergehäuse 2 geformten Schmierölkanal 42. Von dem am Zylindergehäuse 2 befestigten Ende her verläuft das Rohr 40 durch einen oder mehrere Bögen vorzugsweise bis in die kurbelraumseitige Zylinderöffnung einer Zylinderbuchse hinein, so daß das freie Ende des Rohres 40 der Unterseite des Kolbens 11 gegenübersteht. An diesem freien Ende des Rohres 40 befindet sich eine Spritzöffnung 43 für die Kühlung der Unterseite des Kolbens 11. Das Schmieröl durchströmt die Vorrichtung und wird nach Austritt aus der Spritzöffnung 43 im freien Strahl gegen die Unterseite des Kolbens 11 gespritzt.The device for supplying lubricating oil to each individual piston 11 or 12 of the internal combustion engine 1 consists of a tube 40 or 41 (for reasons of clarity, FIG. 1 shows only the tube 40 for cooling a piston in a cylinder of the left row of cylinders). The pipe 40 is fastened to the cylinder housing 2 at one of its ends and is in flow connection with a lubricating oil channel 42 formed in the cylinder housing 2. From the end fastened to the cylinder housing 2, the pipe 40 preferably runs through one or more bends into the cylinder opening of a cylinder liner on the crankcase side so that the free end of the tube 40 faces the underside of the piston 11. At this free end of the tube 40 there is a spray opening 43 for cooling the underside of the piston 11. The lubricating oil flows through the device and is sprayed against the underside of the piston 11 in a free jet after it has emerged from the spray opening 43.

Erfindungsgemäß ist im Verlauf des Rohres 40 bzw. 41 mindestens eine weitere Spritzöffnung 44 vorgesehen. Wie aus der Abbildung ersichtlich, wird durch diese Spritzöffnung 44 Schmieröl an die Rollenstößel 19 bzw. an die Berührungsflächen von Nockenwelle 5 und Rollenstößeln 19 der Einspritzvorrichtung gebracht. Die Rollenstößel 19 der Einspritzvorrichtung werden dadurch benetzt und geschmiert.According to the invention, at least one further spray opening 44 is provided in the course of the pipe 40 or 41. As can be seen from the figure, lubricating oil is brought through this spray opening 44 to the roller tappets 19 or to the contact surfaces of the camshaft 5 and roller tappets 19 of the injection device. The roller tappets 19 of the injection device are wetted and lubricated as a result.

Die weitere Spritzöffnung 44 kann so breit ausgelegt sein, daß sie nicht nur die Rollenstößel benetzt sondern auch gleichzeitig die Stößel 25 der Gaswechselsteuerung bzw. die Berührungsflächen zwischen den Stößeln 25 und der Nockenwelle 5. Dazu kann die Spritzöffnung spaltförmig ausgebildet sein.The further spray opening 44 can be designed so wide that it not only wets the roller tappet but also simultaneously the tappet 25 of the gas exchange control or the contact surfaces between the tappet 25 and the camshaft 5. For this purpose, the spray opening can be designed in the form of a gap.

Es wäre auch denkbar, daß der Schmierölstrahl aus der weiteren Spritzöffnung 44 nur gegen die Stößeln 25 gerichtet ist.It would also be conceivable that the lubricating oil jet from the further spray opening 44 is directed only against the plungers 25.

Es können auch zwei oder mehr Spritzöffnungen 44 im Verlauf des Rohres vorgesehen sein, wobei die eine Spritzöffnung für die Schmierung der für die Gaswechselsteuerung vorgesehenen Triebwerksteile und die zweite Spritzöffnung für die Schmierung der für die Kraftstofförderung vorgesehenen Triebwerksteile dient.Two or more spray openings 44 can also be provided in the course of the tube, the one spray opening serving for the lubrication of the engine parts provided for the gas exchange control and the second spray opening serving for the lubrication of the engine parts provided for the fuel delivery.

Die mindestens eine weitere Spritzöffnung 44 kann an dem gefertigten Rohr 40 gesondert durch Bohren oder gleichzeitig bei der Herstellung des Rohres mit erzeugt werden. Vorzugsweise verläuft die weitere Spritzöffnung 44 quer zur Längsachse des Rohres 40.The at least one further spray opening 44 can be produced separately on the manufactured pipe 40 by drilling or at the same time during the production of the pipe. The further spray opening 44 preferably runs transversely to the longitudinal axis of the tube 40.

Sowohl an die für die Kühlung der Unterseite des Kolbens vorgesehene Spritzöffnung 43 als auch an die mindestens eine im Verlauf des Rohres vorgesehene weitere Spritzöffnung 44 kann eine Düse angesteckt bzw. befestigt werden.
Alternativ dazu können auch das Rohr und die Düse bzw. Düsen einheitlich aus einem Rohrstück gefertigt sein.A nozzle can be attached or attached both to the spray opening 43 provided for cooling the underside of the piston and to the at least one further spray opening 44 provided in the course of the tube.
As an alternative to this, the tube and the nozzle or nozzles can also be manufactured uniformly from one piece of tube.

Die einzelnen Rohre 40 müssen mit ihren Spritzöffnungen 43 und 44 immer exakt zu den anzuspritzenden Bauelementen ausgerichtet sein. Dabei muß die Ausrichtung auf einfache Weise und mit einfachen Mitteln erfolgen können.
Gemäß den Fig. 2 und 3 wird dies durch ein am Rohr 40 befestigtes Fixierblech 53 erreicht. Das Rohr 40 durchsetzt dabei das Blech 53 soweit, daß sein zylindergehäuseseitiges Ende 55 mit einer Rastlänge 55 vorsteht. Das Rohr 40 taucht mit der Rastlänge 55 in eine vom Schmierölkanal 42 abgezweigte Anschlußbohrung 56 als erste Lagesicherung ein. Mittels einer Schraube 57, welche durch eine Bohrung 58 im Fixierblech 53 gesteckt und in einer Gewindebohrung 59 des Zylindergehäuses 2 eingeschraubt ist, erfolgt sodann die entgültige Fixierung am Zylindergehäuse 2.
Damit bei der Montage die Ausrichtung der Spritzöffnungen 43 und 44 automatisch erfolgt, sind die Bohrungen 56 und 59 im Zylindergehäuse 2 und das Rohr 40 gegenüber dem Fixierblech 53 in einer vorbestimmten Lage zueinander angeordnet.The individual pipes 40 with their spray openings 43 and 44 must always be aligned exactly with the components to be molded. The alignment must be done in a simple manner and with simple means.
2 and 3, this is achieved by a fixing plate 53 fastened to the tube 40. The tube 40 passes through the sheet 53 so far that its cylinder housing end 55 protrudes with a detent length 55. The tube 40 dips with the locking length 55 in a branch bore 56 branched off from the lubricating oil channel 42 as a first position securing. The final fixation on the cylinder housing 2 is then carried out by means of a screw 57, which is inserted through a bore 58 in the fixing plate 53 and screwed into a threaded bore 59 of the cylinder housing 2.
So that the alignment of the spray openings 43 and 44 takes place automatically during assembly, the bores 56 and 59 in the cylinder housing 2 and the pipe 40 are arranged relative to the fixing plate 53 in a predetermined position relative to one another.

Claims (8)

  1. Reciprocating piston internal combustion engine (1) with a cylinder head housing (2) having cylinder banks (3, 4) arranged in a V-shape, with a camshaft (6) situated in the area of the apex of the V-space for the control at least of the gas exchange valves (7), with engine components (19, 20, 25) that serve the fuel delivery system (8), and with a piston cooling device which comprises a tube (40) for each piston (11, 12), one end of the said tube being connected to a lubrication oil channel (42) in the cylinder head housing while the other end comprises an injection aperture (43) opposite the underside of the piston, and such that along its length the tube has a further injection aperture (44),
    characterized in that
    at least one further injection aperture (44) is provided for the lubrication of the gas exchange control system (7) and/or the engine components (19, 20, 25) that serve the fuel delivery system (8).
  2. Reciprocating piston internal combustion engine according to Claim 1,
    characterized in that
    a single injection aperture (44) intended for lubrication is provided, from which both the engine components for the gas exchange control system and those for the fuel delivery system are irrigated.
  3. Reciprocating piston internal combustion engine according to either of Claims 1 or 2,
    characterized in that
    two injection apertures (44) intended for lubrication are provided, one of them serving to lubricate the engine components (25) provided for the gas exchange control system and the other to lubricate the engine components (19, 20) provided for the fuel delivery system.
  4. Reciprocating piston internal combustion engine according to any one or more of the preceding Claims,
    characterized in that
    at least one further injection aperture (44) is produced by drilling of the manufactured tube (40).
  5. Reciprocating piston internal combustion engine according to any one or more of the preceding Claims 1 to 3,
    characterized in that
    the at least one further injection aperture (44) is also produced during the manufacture of the tube (40).
  6. Reciprocating piston internal combustion engine according to any one or more of the preceding Claims,
    characterized in that
    a nozzle is plugged or fitted into the injection aperture (43) provided for the cooling of the piston, and/or to the at least one injection aperture (44) provided for lubrication.
  7. Reciprocating piston internal combustion engine according to any one or more of the preceding Claims,
    characterized in that
    the injection aperture (43) provided for cooling the piston and/or the at least one injection aperture (44) provided for lubrication, is/are formed as a nozzle manufactured integrally with the tube (40).
  8. Reciprocating piston internal combustion engine according to any one or more of the preceding Claims,
    characterized in that
    in the area if its end near the cylinder head housing (54), the tube (40) is attached to a fixing plate (53) positioned transversely to the direction of the tube's length, such that for a first fixing, the tube projects through the fixing plate (53) by a detent length (55), and this excess length is inserted into a connection hole (56) branching off from the inlet channel (42), and that to further fix its position, a screw connection is used to attach the tube (40) to the cylinder housing (2) by means of a screw-bolt (57) and a threaded hole (59) in the cylinder housing (2).
EP94118070A 1993-12-23 1994-11-16 Device for supplying liquids to a piston Revoked EP0659989B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4344078A DE4344078A1 (en) 1993-12-23 1993-12-23 Device for supplying liquids to a flask
DE4344078 1993-12-23

Publications (2)

Publication Number Publication Date
EP0659989A1 EP0659989A1 (en) 1995-06-28
EP0659989B1 true EP0659989B1 (en) 1997-11-05

Family

ID=6505932

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94118070A Revoked EP0659989B1 (en) 1993-12-23 1994-11-16 Device for supplying liquids to a piston

Country Status (3)

Country Link
US (1) US5503116A (en)
EP (1) EP0659989B1 (en)
DE (2) DE4344078A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5649505A (en) * 1996-01-18 1997-07-22 Cummins Engine Company, Inc. Multiple-hole, piston cooling nozzle and assembly arrangement therefore
US5881684A (en) * 1997-07-21 1999-03-16 Bontaz Centre, Societe Anonyme Interference fit cooling spray nozzle
US6250275B1 (en) 1999-08-16 2001-06-26 Caterpillar Inc. Internal combustion engine piston pin lubrication
DE10161610A1 (en) * 2001-12-14 2003-06-26 Man Nutzfahrzeuge Ag Internal combustion engine with piston cooling and lubrication of a valve train
US7415946B2 (en) * 2006-04-27 2008-08-26 Caterpillar Inc. Engine and method for operating an engine
US7823545B2 (en) * 2007-08-17 2010-11-02 Gm Global Technology Operations, Inc. Piston squirter system and method
US8977477B2 (en) 2012-10-04 2015-03-10 Ford Global Technologies, Llc Approach for controlling operation of oil injectors
CH718247A1 (en) * 2021-01-11 2022-07-15 Liebherr Machines Bulle Sa Internal combustion engine with nozzle arrangement for cooling and lubricating the piston-connecting rod assembly.

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Publication number Priority date Publication date Assignee Title
DE624528C (en) * 1936-01-23 Martin Stolle Lubrication for internal combustion engines
US2991770A (en) * 1959-07-15 1961-07-11 Gen Motors Corp Piston cooling means
DE2353736C2 (en) * 1973-10-26 1982-09-09 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8500 Nürnberg Device for lubricating the cams of camshafts in internal combustion engines
DE2428451A1 (en) * 1974-06-12 1976-01-02 Motoren Turbinen Union Spray nozzle adjustment for combustion engines with piston cooling - has plano-convex intermediate flange to allow accurate nozzle positioning
DE2524272A1 (en) * 1975-05-31 1976-12-09 Daimler Benz Ag Dry sump IC engine for vehicles - has oil reservoir in upper part of crankcase
GB1567240A (en) * 1977-04-28 1980-05-14 Brown Tractors Ltd Internal combustion engines
DE3125835C2 (en) * 1981-07-01 1985-10-03 Mtu Motoren- Und Turbinen-Union Friedrichshafen Gmbh, 7990 Friedrichshafen Spray device for supplying a piston with coolant
CS234514B1 (en) * 1983-06-22 1985-04-16 Zdenek Kudelka Equipment for piston spraying by oil
DE3546646C2 (en) * 1984-03-13 1989-06-15 Ludwig Elsbett Oil-cooled internal combustion engine with two-part piston and oil baffle surfaces in the bottom part of the piston
DE3508405A1 (en) * 1984-03-13 1985-10-03 Günter Elsbett Internal combustion engine with reduced noise and heat emission
DE3821302C1 (en) * 1988-06-24 1989-06-01 Mtu Friedrichshafen Gmbh
DE3910794C2 (en) * 1989-04-04 1995-05-11 Kloeckner Humboldt Deutz Ag Diesel engine

Also Published As

Publication number Publication date
US5503116A (en) 1996-04-02
DE4344078A1 (en) 1995-06-29
DE59404530D1 (en) 1997-12-11
EP0659989A1 (en) 1995-06-28

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